Signature of the interaction between dark energy and dark matter in galaxy clusters

By E. Abdalla, L. Abramo, L. Sodré, Bin Wang. 2007

154 citations recorded by the source corpus.

Abstract We investigate the influence of an interaction between dark energy and dark matter upon the dynamics of galaxy clusters. We obtain the general Layser–Irvine equation in the presence of interactions, and find how, in that case, the virial theorem stands corrected. Using optical, X-ray and weak lensing data from 33 relaxed galaxy clusters, we put constraints on the strength of the coupling between the dark sectors. Available data suggests that this coupling is small but positive, indicating that dark energy might be decaying into dark matter. Systematic effects between the several mass estimates, however, should be better known, before definitive conclusions on the magnitude and significance of this coupling could be established.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/eea4f5daa3bac12e20d4548f4d73a011e901bac8

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In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

Cosmology and Fundamental Physics with the Euclid Satellite (2012, methodology): “Nonlinear evolution within coupled quintessence cosmologies has been addressed using various methods of investigation, such as spherical collapse [809, 1251, 817, 690, 1135, 5, 172] and alternative semianalytic methods [1037, 60].”